Compounds for ferroelectric liquid crystal devices

Details Compounds for ferroelectric liquid crystal devices Compounds for ferroelectric liquid crystal devices

1986-08-19

1989-04-25

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 25229965, 25229966, 560 39, 560 41, G02F 113, C09K 1952, C09K 1912, C07C10102

Patent

active

048242179

ABSTRACT:
##STR1## Ferroelectric smectic liquid crystal mixtures are provided consisting of two constituents; a smectic host and another containing a chiral compound in which rotation of the chiral center relative to the molecular core is sterically hindered, so that the chiral compound induces a high Ps in the mixture. A preferred class of chiral compounds is those derived from naturally occurring compounds with chiral groups, especially .alpha.-hydroxycarboxylic acids, amino acids and terpenoids, e.g. with chiral groups (I), (II), (III). The chiral group is incorporated into a compound containing a mesogenic combination of groups, e.g. with chains of cyclic groups and some mesogenic combinations are described.

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